Declare Sub mciSendStringA Lib "winmm.dll" (ByVal lpstrCommand As String, ByVal lpstrReturnString As Any, ByVal uReturnLength As Long, ByVal hwndCallback As Long)
'打开光驱
'mciSendStringA "Set CDAudio Door Open", 0&, 0, 0
'关闭光驱
'mciSendStringA "Set CDAudio Door Closed", 0&, 0, 0